BMW 3 4 Series F30 LCI F32 F80 M3 F82 Brake Servo Unit Master Cylinder 2284896

The Brake Booster with Brake Master Cylinder for BMW 3 Series and 4 Series F30 LCI / F32 / F80 M3 / F82 is an original brake system component, specifically designed for BMW models of this generation. As part of the brake boosters and brake force regulators group, it ensures stable brake assistance and precise pressure distribution within the system. This solution is intended for users who wish to maintain the factory braking characteristics and compatibility with the vehicle's safety systems.

Specifications and technical data

• SKU: rhd-7849876
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2284896
• Substitutable numbers: 2284896, 34337849879 34337849876 34337851569, 7849879 7849876 7851569, 34336796531 34337852160, 6796531 7852160, ŁS
• Category: Brake Servos

Intended Use and Model Fitment for BMW

The offered master cylinder with booster is structurally adapted for BMW 3 Series and 4 Series F-generation platforms, including the sporty M versions. Using an original BMW OE solution allows for proper cooperation with the ABS/DSC system and other modules responsible for vehicle stability.

Thanks to its factory design, this component is optimized for mounting geometry, piston stroke, and assistance characteristics, which translates to predictable, repeatable brake pedal behavior. This is particularly important in higher-powered cars, such as the F80 M3 or F82, where the braking system operates under more demanding conditions.

Construction and Function in the Braking System

The brake booster integrated with the master cylinder plays a crucial role in converting pedal pressure into pressure within the brake lines. The appropriately selected assistance ratio ensures:

• more comfortable pedal operation during everyday city driving,
• clear brake feel during dynamic driving,
• stable pressure in the brake circuits during repeated, hard braking.

As a component from the brake boosters and brake force regulators category, it works with other system components, maintaining proper pressure proportions between the vehicle's axles and supporting the operation of electronic safety systems.

Benefits of Using an Original BMW OE Booster

Using an original BMW OE part allows for maintaining the parameters intended by the vehicle manufacturer. Key benefits include:

• Factory Compatibility – maintaining correct cooperation with the vehicle's electronics and the ABS/DSC system.
• Consistent Braking Characteristics – no changes in pedal travel and firmness compared to the factory configuration.
• Proper Mounting Fit – correct positioning relative to the bulkhead, brake pedal, and lines, which facilitates installation and servicing.

For users who prioritize maintaining the original vehicle specification, choosing such a component is a technically safe and predictable solution in operation.

Condition, Verification, and Preparation for Installation

This component comes from the secondary market and is offered as a used part, which helps reduce repair costs while maintaining the original BMW construction. Before being reintroduced for sale, this type of component is routinely verified for leaks, mechanism operation, and connection condition to ensure proper function within the vehicle's braking system.

Due to the importance of the braking system for safety, installation in a specialized service center is recommended. They will verify the correctness of the installation, system bleeding, and cooperation with the vehicle's electronics after replacement.

Operation and Related Service Issues

When replacing the booster with a master cylinder, it is advisable to simultaneously check the condition of the brake lines, brake fluid, and friction components. A comprehensive approach to brake system servicing helps maintain stable braking parameters over the long term.

If you are interested in a broader approach to maintaining comfort and safety in your car, including selecting used OEM components, you will find practical tips in the article: Air Conditioning and Heating – Part Selection and Maintenance for Year-Round Comfort. This is a good addition to your knowledge when planning more extensive service work on your vehicle.